EP0802372A1 - Method and device for controlling the combustion process of a boiler - Google Patents

Method and device for controlling the combustion process of a boiler Download PDF

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Publication number
EP0802372A1
EP0802372A1 EP97710009A EP97710009A EP0802372A1 EP 0802372 A1 EP0802372 A1 EP 0802372A1 EP 97710009 A EP97710009 A EP 97710009A EP 97710009 A EP97710009 A EP 97710009A EP 0802372 A1 EP0802372 A1 EP 0802372A1
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EP
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Prior art keywords
flame
burner
low
spectral resolution
sensor
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Granted
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EP97710009A
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German (de)
French (fr)
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EP0802372B1 (en
Inventor
Franz Dipl.-Ing. Wintrich
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Orfeus Combustion Engr GmbH
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BFI Automation Mindermann GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/14—Flame sensors using two or more different types of flame sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/16—Flame sensors using two or more of the same types of flame sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/20—Camera viewing

Definitions

  • the present invention relates to a method and a device for controlling a combustion process in a boiler according to the preamble of claim 1 and claim 10.
  • Interventions on actuators of the combustion process are derived as a function of the measured variables, so that, for example, at a high NOx concentration in the combustion gas, actuators of the burner are actuated in order to supply higher amounts of combustion air globally.
  • the fuel supply can be increased by correspondingly actuating actuators.
  • a stable control of the combustion process with the known methods is relatively difficult due to several parameters that have to be observed simultaneously.
  • the known methods have the disadvantage that they do not record the actual combustion process of the fuel and only control it indirectly.
  • the object of the present invention is to provide a method and a device for controlling a combustion process in a boiler according to the preamble of claim 1 and claim 10, respectively, which allows direct detection and control of the combustion.
  • the detector advantageously detects the flame by means of a high-resolution and low-spectral resolution sensor and a low-resolution and high-spectral resolution sensor.
  • the high-location and low-spectral resolution sensor is preferably designed as a CCD camera. With the CCD camera, the shape and surroundings of the flame can be easily captured. This sensor preferably detects the flow field of the flame. It can also detect a relatively accurate local distribution of the temperature.
  • the low-location and high-spectral resolution sensor is preferably formed by glass fiber cables with associated spectral decomposition devices.
  • a spectral decomposition device can be designed in a particularly simple manner as a grating, slit or prism.
  • the radical and / or temperature field of the flame is preferably detected with the low-resolution and high-spectral resolution sensor. The detection of individual radicals is of particular importance and their precise local assignment is of lesser importance.
  • changes in the temperature, flow and / or radical field of the flame are preferably recorded over time.
  • Fig. 1 shows schematically a section of a boiler for coal combustion.
  • FIG. 2 shows a view of the detector from FIG. 1.
  • the boiler 1 for coal combustion shown schematically in FIG. 1 has a burner 2. Fuel and air are introduced into the boiler 1 via the burner 2 and burned to form a flame 3.
  • the essentially cylindrical burner 2 comprises an outer air duct 4, an inner air duct 5 and an inlet duct 6 for the introduction of fuel.
  • An entry funnel 7 is provided at the end of the burner 2 facing the boiler 1.
  • a detector 10 connected to a computing device 9 is received from a wall 8 of the boiler 1.
  • the detector 10 is directed towards the flame 3 and comprises a sensor which is designed as a CCD camera 11 and which has a high-location and low-spectral resolution and a sensor which has a low-location and high spectral resolution and is formed by fiber optic cable 12 with associated spectral decomposition devices.
  • the glass fiber cables 12 of the sensor are arranged below the lens of the CCD camera 11.
  • the computing device 9 is connected to actuators of the burner 2 and a fuel mill (not shown) via signal lines (not shown).
  • the glass fiber cables 12 are arranged in a fan-like manner.
  • the flame 3 formed in the coal combustion is observed by the detector 10 and its formation is detected.
  • the shape and the flow field are detected by the sensor 11 and the radical and temperature field of the flame 3 are detected by the sensor 12.
  • the output signals of the detector 10 are forwarded to the computing device 9 and processed there to control signals for the actuators of the burner 2 and the fuel mill for regulating the flame 3.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Incineration Of Waste (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

The method involves transferring fuel into the boiler (1) which is burned by forming a flame (3) in a burner (2). Formation of the flame is detected by a detector using a small-area high spectral resolution CCD camera. The flame is regulated depending on the processing of detector output signals in a computer unit (9) by varying burner control parameters at the burner and/or at a device connected in series with the burner. The flame is detected by sensor with high spatial resolution and low spectral resolution and a sensor with low spatial resolution and high spectral resolution..

Description

Die vorliegende Erfindung betrifft ein Verfahren und eine Einrichtung zur Steuerung eines Verbrennungsprozesses in einem Kessel nach dem Oberbegriff des Anspruchs 1 bzw. Anspruchs 10.The present invention relates to a method and a device for controlling a combustion process in a boiler according to the preamble of claim 1 and claim 10.

Bei bekannten Verfahren zur Steuerung eines Verbrennungsprozesses in einem Kessel mit Brennern werden Daten über verschiedene Prozeßparameter erfaßt und zum Ableiten von Eingriffen auf Stellgrößen verarbeitet. So werden zum Beispiel Temperatur und Zusammensetzung von Verbrennungsgasen am Kesselaustritt, Dampfparameter wie Temperatur und Dampfmassenstrom und Temperaturen im Kessel gemessen.In known methods for controlling a combustion process in a boiler with burners, data about various process parameters are recorded and processed to derive interventions on manipulated variables. For example, the temperature and composition of combustion gases at the boiler outlet, steam parameters such as temperature and steam mass flow and temperatures in the boiler are measured.

In Abhängigkeit der gemessenen Größen werden Eingriffe auf Stellglieder des Verbrennungsprozesses abgeleitet, so daß beispielsweise bei einer hohen NOX-Konzentration im Verbrennungsgas Stellglieder des Brenners betätigt werden, um global höhere Mengen an Verbrennungsluft zuzuführen. In einem anderen Fall kann bei einer Messung eines relativ niedrigen Dampfmassenstroms die Brennstoffzufuhr durch entsprechende Ansteuerung von Stellgliedern erhöht werden. Eine stabile Steuerung des Verbrennungsprozesses mit den bekannten Verfahren ist aufgrund mehrerer gleichzeitig einzuhaltender Parameter relativ schwierig.Interventions on actuators of the combustion process are derived as a function of the measured variables, so that, for example, at a high NOx concentration in the combustion gas, actuators of the burner are actuated in order to supply higher amounts of combustion air globally. In another case, when a relatively low steam mass flow is measured, the fuel supply can be increased by correspondingly actuating actuators. A stable control of the combustion process with the known methods is relatively difficult due to several parameters that have to be observed simultaneously.

Die bekannten Verfahren haben den Nachteil, daß sie den eigentlichen Verbrennungsvorgang des Brennstoffs nicht erfassen und nur indirekt steuern.The known methods have the disadvantage that they do not record the actual combustion process of the fuel and only control it indirectly.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren und eine Einrichtung zur Steuerung eines Verbrennungsprozesses in einem Kessel nach dem Oberbegriff des Anspruch 1 bzw. Anspruch 10 anzugeben, das bzw. die eine direkte Erfassung und Steuerung der Verbrennung erlaubt.The object of the present invention is to provide a method and a device for controlling a combustion process in a boiler according to the preamble of claim 1 and claim 10, respectively, which allows direct detection and control of the combustion.

Diese Aufgabe wird durch den kennzeichnenden Teil des Anspruch 1 bzw. Anspruch 10 gelöst.This object is solved by the characterizing part of claim 1 and claim 10.

Durch die Beobachtung und Analyse des Flammenbildungsverhaltens bei dem eigentlichen Verbrennungsvorgang des Brennstoffs in einem Brennernahfeld können Daten zu einer direkten Steuerung bereitgestellt werden. Mit einer Regelung der Flamme werden andere Prozeßparameter gewissermaßen bereits zwangsläufig mitgeregelt. Wird die Flamme mit einer optimalen Ausbildung gehalten, kann praktisch davon ausgegangen werden, daß die üblichen Prozeßparameter zumindest in der Nähe eines optimalen Betriebspunktes liegen. Anhand der verarbeiteten Ausgangssignale des Detektors können die Zufuhr von Primär-Sekundär-und/oder Tertiärluft, die Zufuhr von Brennstoff und strömungstechnische Einstellvorrichtungen des Brenners eingestellt werden. Beispielsweise kann der Drall beim Eintrag des Brennstoffs eingestellt werden. Ferner kann das Brennstoff/Luftverhältnis lokal optimal eingestellt werden. Hierbei wird es ermöglicht, entweder die Menge an Brennstoff oder an Luft gezielt auf einen optimalen Wert einzustellen, um das gewünschte Brennstoff/Luftverhältnis zu erreichen.By observing and analyzing the flame formation behavior during the actual combustion process of the fuel in a near-burner area, data can be provided for direct control. By regulating the flame, other process parameters are inevitably also also controlled. Will the flame come with an optimal training, it can be practically assumed that the usual process parameters are at least in the vicinity of an optimal operating point. On the basis of the processed output signals of the detector, the supply of primary-secondary and / or tertiary air, the supply of fuel and fluidic adjustment devices of the burner can be set. For example, the swirl can be adjusted when the fuel is introduced. Furthermore, the fuel / air ratio can be optimally adjusted locally. This enables either the amount of fuel or air to be set to an optimal value in order to achieve the desired fuel / air ratio.

Der Detektor erfaßt die Flamme vorteilhaft mittels eines hochorts- und geringspektralauflösenden Sensors sowie eines geringorts-und hochspektralauflösenden Sensors.The detector advantageously detects the flame by means of a high-resolution and low-spectral resolution sensor and a low-resolution and high-spectral resolution sensor.

Der hochorts- und geringspektralauflösende Sensor ist bevorzugt als CCD-Kamera ausgebildet. Mit der CCD-Kamera kann auf einfache Weise die Form und das Umfeld der Flamme erfaßt werden. Dieser Sensor erfaßt bevorzugt das Strömungsfeld der Flamme. Er kann auch eine relativ genaue örtliche Verteilung der Temperatur erfassen.The high-location and low-spectral resolution sensor is preferably designed as a CCD camera. With the CCD camera, the shape and surroundings of the flame can be easily captured. This sensor preferably detects the flow field of the flame. It can also detect a relatively accurate local distribution of the temperature.

Der geringorts- und hochspektralauflösende Sensor ist bevorzugt durch Glasfaserkabel mit zugeordneten Spektralzerlegungsvorrichtungen ausgebildet. Eine Spektralzerlegungsvorrichtung kann in besonders einfacher Weise als Gitter, Spalt oder Prisma ausgebildet sein. Mit dem geringorts- und hochspektralauflösenden Sensor wird bevorzugt das Radikalen- und/oder Temperaturfeld der Flamme erfaßt. Hierbei ist die Erfassung einzelner Radikale von besonderer und deren genaue örtliche Zuordnung eher von geringerer Bedeutung.The low-location and high-spectral resolution sensor is preferably formed by glass fiber cables with associated spectral decomposition devices. A spectral decomposition device can be designed in a particularly simple manner as a grating, slit or prism. The radical and / or temperature field of the flame is preferably detected with the low-resolution and high-spectral resolution sensor. The detection of individual radicals is of particular importance and their precise local assignment is of lesser importance.

Um eine relativ stabile Steuerung des Verbrennungsprozesses zu ermöglichen, werden bevorzugt zeitliche Veränderungen des Temperatur-, Strömungs- und/oder Radikalenfelds der Flamme erfaßt.In order to enable a relatively stable control of the combustion process, changes in the temperature, flow and / or radical field of the flame are preferably recorded over time.

Weitere Ausgestaltungen der Erfindung sind den Unteransprüchen und der nachfolgenden Beschreibung eines Ausführungsbeispiels zu entnehmen.Further refinements of the invention can be found in the subclaims and the following description of an exemplary embodiment.

Die Erfindung wird nachfolgend anhand eines in den Abbildungen schematisch dargestellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail below on the basis of an exemplary embodiment shown schematically in the figures.

Fig. 1 zeigt schematisch einen Ausschnitt eines Kessels zur Kohleverfeuerung.Fig. 1 shows schematically a section of a boiler for coal combustion.

Fig. 2 zeigt eine Ansicht des Detektors aus Fig. 1.FIG. 2 shows a view of the detector from FIG. 1.

Der in Fig. 1 schematisch dargestellte Kessel 1 zur Kohleverfeuerung weist einen Brenner 2 auf. Über den Brenner 2 wird Brennstoff und Luft in den Kessel 1 eingetragen und unter Bildung einer Flamme 3 verbrannt.The boiler 1 for coal combustion shown schematically in FIG. 1 has a burner 2. Fuel and air are introduced into the boiler 1 via the burner 2 and burned to form a flame 3.

Der im wesentlichen zylinderförmig ausgebildete Brenner 2 umfaßt einen äußeren Luftkanal 4, einen inneren Luftkanal 5 und einen Eintragskanal 6 zum Brennstoffeintrag. An dem dem Kessel 1 zugewandten Ende des Brenners 2 ist ein Eintragstrichter 7 vorgesehen.The essentially cylindrical burner 2 comprises an outer air duct 4, an inner air duct 5 and an inlet duct 6 for the introduction of fuel. An entry funnel 7 is provided at the end of the burner 2 facing the boiler 1.

Von einer Wandung 8 des Kessels 1 ist ein mit einer Recheneinrichtung 9 verbundener Detektor 10 aufgenommen. Der Detektor 10 ist auf die Flamme 3 gerichtet und umfaßt einen als CCD-Kamera 11 ausgebildeten hochorts- und geringspektralauflösenden Sensor und einen durch Glasfaserkabel 12 mit zugeordneten Spektralzerlegungsvorrichtungen ausgebildeten geringorts- und hochspektralauflösenden Sensor.A detector 10 connected to a computing device 9 is received from a wall 8 of the boiler 1. The detector 10 is directed towards the flame 3 and comprises a sensor which is designed as a CCD camera 11 and which has a high-location and low-spectral resolution and a sensor which has a low-location and high spectral resolution and is formed by fiber optic cable 12 with associated spectral decomposition devices.

Wie in der in Fig. 2 schematisch dargestellten Frontansicht des Detektors 10 gezeigt, sind die Glasfaserkabel 12 des Sensors unterhalb des Objektivs der CCD-Kamera 11 angeordnet.As shown in the front view of the detector 10 schematically shown in FIG. 2, the glass fiber cables 12 of the sensor are arranged below the lens of the CCD camera 11.

Die Recheneinrichtung 9 ist über weiter nicht dargestellte Signalleitungen mit Stellgliedern des Brenners 2 und einer nichtdargestellten Brennstoffmühle verbunden.The computing device 9 is connected to actuators of the burner 2 and a fuel mill (not shown) via signal lines (not shown).

Um einen im wesentlichen gleichgroßen Blickwinkel wie die CCD-Kamera 11 zu ermöglichen, sind die Glasfaserkabel 12 fächerartig angeordnet.In order to enable an essentially the same viewing angle as the CCD camera 11, the glass fiber cables 12 are arranged in a fan-like manner.

Zur Steuerung des Verbrennungsprozesses in dem Kessel 1 wird die bei der Kohleverbrennung gebildete Flamme 3 durch den Detektor 10 beobachtet und deren Ausbildung erfaßt. Hierbei werden über den Sensor 11 die Form und das Strömungsfeld und über den Sensor 12 das Radikalen- und Temperaturfeld der Flamme 3 erfaßt.To control the combustion process in the boiler 1, the flame 3 formed in the coal combustion is observed by the detector 10 and its formation is detected. Here, the shape and the flow field are detected by the sensor 11 and the radical and temperature field of the flame 3 are detected by the sensor 12.

Die Ausgangssignale des Detektors 10 werden an die Recheneinrichtung 9 weitergeleitet und dort zu Steuersignalen für die Stellglieder des Brenners 2 und der Brennstoffmühle zur Regelung der Flamme 3 verarbeitet.The output signals of the detector 10 are forwarded to the computing device 9 and processed there to control signals for the actuators of the burner 2 and the fuel mill for regulating the flame 3.

Claims (14)

Verfahren zur Steuerung eines Verbrennungsprozesses in einem Kessel mit einem Brenner, über den Brennstoff in den Kessel eingetragen und unter Bildung einer Flamme verbrannt wird, dadurch gekennzeichnet, daß die Ausbildung der Flamme durch einen Detektor erfaßt wird und die Flamme in Abhängigkeit der in einer Recheneinrichtung verarbeiteten Ausgangssignale des Detektors durch Stellgrößeneingriffe auf den Brenner und/oder eine dem Brenner vorgeschaltete Vorrichtung geregelt wird.Method for controlling a combustion process in a boiler with a burner, via which fuel is introduced into the boiler and burned to form a flame, characterized in that the formation of the flame is detected by a detector and the flame as a function of that processed in a computing device Output signals of the detector is controlled by manipulating manipulated variables on the burner and / or a device upstream of the burner. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Detektor die Flamme mittels eines hochorts- und geringspektralauflösenden Sensors sowie eines geringorts-und hochspektralauflösenden Sensors erfaßt.A method according to claim 1, characterized in that the detector detects the flame by means of a high-location and low-spectral resolution sensor and a low-location and high-spectral resolution sensor. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der hochorts- und geringspektralauflösende Sensor als CCD-Kamera ausgebildet ist.A method according to claim 2, characterized in that the high location and low spectral resolution sensor is designed as a CCD camera. Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der geringorts- und hochspektralauflösende Sensor durch Glasfaserkabel mit zugeordneten Spektralzerlegungsvorrichtungen ausgebildet ist.Method according to claim 2 or 3, characterized in that the low-location and high-spectral resolution sensor is formed by fiber optic cables with associated spectral decomposition devices. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Temperaturfeld der Flamme erfaßt wird.Method according to one of claims 1 to 4, characterized in that the temperature field of the flame is detected. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Strömungsfeld der Flamme erfaßt wird.Method according to one of claims 1 to 5, characterized in that the flow field of the flame is detected. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Radikalenfeld der Flamme erfaßt wird.Method according to one of claims 1 to 6, characterized in that the radical field of the flame is detected. Verfahren nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß zeitliche Veränderungen des Temperatur-, Strömungs- und/oder Radikalenfelds der Flamme erfaßt werden.Method according to one of claims 5 to 7, characterized in that changes over time in the temperature, flow and / or radical field of the flame are detected. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß Stellgrößeneingriffe auf eine dem Brenner vorgeschaltete Brennstoffmühle vorgenommen werden.Method according to one of claims 1 to 8, characterized in that manipulated variable interventions are carried out on a fuel mill upstream of the burner. Einrichtung zur Steuerung eines Verbrennungsprozesses in einem Kessel (1) mit einem Brenner (2), über den Brennstoff in den Kessel (2) eingetragen und unter Bildung einer Flamme (3) verbrannt wird, dadurch gekennzeichnet, daß von einer Wandung (8) des Kessels (1) ein mit einer Recheneinrichtung (9) verbundener Detektor (10) aufgenommen wird, der auf die Flamme (3) gerichtet ist und die Recheneinrichtung (9) mit Stellvorrichtungen des Brenners (2) und/oder einer dem Brenner (2) vorgeschaltete Vorrichtung zur Regelung der Flamme verbunden ist.Device for controlling a combustion process in a boiler (1) with a burner (2) via which fuel is introduced into the boiler (2) and burned to form a flame (3), characterized in that the wall (8) of the Boiler (1), a detector (10) connected to a computing device (9), which is directed towards the flame (3), and the computing device (9) with actuating devices of the burner (2) and / or of the burner (2) upstream device for controlling the flame is connected. Einrichtung nach Anspruch 10, dadurch gekennzeichnet, daß der Detektor (10) einen hochorts- und geringspektralauflösenden Sensor (11) sowie einen geringorts-und hochspektralauflösenden Sensor (12) umfaßt.Device according to claim 10, characterized in that the detector (10) comprises a sensor (11) with high local and low spectral resolution and a sensor (12) with low local and high spectral resolution. Einrichtung nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß der hochorts- und geringspektralauflösende Sensor (11) als CCD-Kamera ausgebildet ist.Device according to claim 10 or 11, characterized in that the high-location and low-spectral resolution sensor (11) is designed as a CCD camera. Einrichtung nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß der geringorts- und hochspektralauflösende Sensor (12) durch Glasfaserkabel mit zugeordneten Spektralzerlegungsvorrichtungen ausgebildet ist.Device according to one of Claims 10 to 12, characterized in that the sensor (12) with low local and high spectral resolution is formed by fiber optic cables with associated spectral decomposition devices. Einrichtung nach Anspruch 13, dadurch gekennzeichnet, daß die Glasfaserkabel fächerartig angeordnet sind.Device according to claim 13, characterized in that the glass fiber cables are arranged like a fan.
EP97710009A 1996-04-17 1997-04-15 Method and device for controlling the combustion process of a boiler Expired - Lifetime EP0802372B1 (en)

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DE19615141 1996-04-17
DE19615141A DE19615141A1 (en) 1996-04-17 1996-04-17 Method and device for controlling a combustion process in a boiler

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EP0802372B1 EP0802372B1 (en) 2001-06-13

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CN (1) CN1177076A (en)
AT (1) ATE202196T1 (en)
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DE (2) DE19615141A1 (en)
ES (1) ES2159825T3 (en)
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EP0845636A3 (en) * 1996-11-28 1999-07-07 ORFEUS Combustion Engineering GmbH A flame monitoring apparatus
EP1010943A2 (en) * 1998-12-16 2000-06-21 Forney Corporation Flame monitoring methods and apparatus
WO2002070953A1 (en) * 2001-03-02 2002-09-12 Powitec Intelligent Technologies Gmbh Measuring device, particularly for monitoring flames during a combustion process
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DE102010044430A1 (en) 2010-09-04 2012-03-08 G I W E P Gesellschaft für industrielle Wärme, Energie- und Prozeßtechnik m.b.H Method for monitoring gas-heated furnace by continuous comparative control of gas- and air volumes, involves determining comparison standards for gas- and air volumes using measured process values after start-up phase of furnace

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DE19931111A1 (en) * 1999-07-06 2001-01-11 Electrowatt Tech Innovat Corp Flame monitoring device e.g. for refuse burning plant comprises array of semiconductor photodetectors connected to evaluation circuitry
DE10110181A1 (en) * 2001-03-02 2002-09-12 Powitec Intelligent Tech Gmbh Measurement arrangement especially for monitoring flames during burning process, has housing with video camera and glass fiber camera using same borescope for monitoring flames
WO2011072730A1 (en) * 2009-12-16 2011-06-23 Abb Research Ltd Optical flame sensor
BRPI1003906A2 (en) * 2010-01-21 2013-02-26 Universidade Federal Da Bahia natural gas combustion system for the control of correlations between thermal radiation soot and nox formation through the use of oxygen enriched combustion
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RU207903U1 (en) * 2021-07-01 2021-11-23 Павел Дмитриевич Дуньшин Digital device for control, analysis and optimization of the fuel combustion process in the boiler unit

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AU686966B2 (en) 1998-02-12
ATE202196T1 (en) 2001-06-15
AU1895097A (en) 1997-11-13
DE59703750D1 (en) 2001-07-19
ZA973113B (en) 1998-08-05
EP0802372B1 (en) 2001-06-13
DE19615141A1 (en) 1997-10-23
CN1177076A (en) 1998-03-25
ES2159825T3 (en) 2001-10-16

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